great quote, it is necessary to make mistakes along the way when you're learning something. no one always does everything perfectly. if you only do things that are inside of your comfort zone/ that you have done before, you'll never make a mistake because you are experienced. but learning from your mistakes is crucial and you should try your best to perform a task ,don't fear that this may leads to a mistake. Becoz any one in this world is n't 100 percent perfect.